[Understanding and Techniques Feedback]

Technique G201: Giving users advanced warning when opening a new window

Please stress the importance of this not just for new windows but the opening of dialogue boxes.

A screen reader user would  have any even more difficult time perceiving a new dialogue box is open than a new tab or window.  Some browsers announce when a new tab is opened but do not do so when a dialogue opens.

With a new tab or window, an experienced screen reader user might try a keyboard shortcut to switch back to the referring link, and figure out what happened. But a dialogue box would need to be closed entirely to return to the underlying web page..  Notification that a dialogue will open would be very helpful if not essential.